How to get image size (height & width) using JavaScript?

Question

Are there any JavaScript or jQuery APIs or methods to get the dimensions of an image on the page?

Answer 1

If you are using jQuery and you are requesting image sizes you have to wait until they load or you will only get zeroes.

$(document).ready(function() {
    $("img").load(function() {
        alert($(this).height());
        alert($(this).width());
    });
});